/**
 * Copyright (c) 2010, Casey Lai
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * 
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * 
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation and/or
 * other materials provided with the distribution.
 * 
 * Neither the name of the Cheetah Group nor the names of its contributors may be
 * used to endorse or promote products derived from this software without specific
 * prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
 * OF SUCH DAMAGE.
 */

package org.cheetahworkflow.designer.model;

import java.util.ArrayList;
import java.util.List;

public abstract class LogicNode extends Node {

	private static final long serialVersionUID = -8454211099824321511L;
	
	public static final String PROP_INCOMING = "INCOMING";
	public static final String PROP_OUTGOING = "OUTGOING";
	
	protected List<Arrow> incomingArrows = new ArrayList<Arrow>();
	
	protected List<Arrow> outgoingArrows = new ArrayList<Arrow>();
	
	protected Arrow outgoingArrow;

	public void addIncomingArrow(Arrow arrow) {
		if (!incomingArrows.contains(arrow)) {
			incomingArrows.add(arrow);
			fireStructureChange(PROP_INCOMING, arrow);
		}
	}
	
	public void removeIncomingArrow(Arrow arrow) {
		if (incomingArrows.contains(arrow)) {
			incomingArrows.remove(arrow);
			fireStructureChange(PROP_INCOMING, arrow);
		}
	}
	
	public List<Arrow> getIncomingArrows() {
		return incomingArrows;
	}
	
	public abstract void addOutgoingArrow(Arrow arrow);
	
	public abstract void removeOutgoingArrow(Arrow arrow);
	
	public abstract List<Arrow> getOutgoingArrow();
	
	public abstract RapidView getRapidView();
}
